QDEC sample code from zephyr is not running on nrf52840dk

RE: QDEC sample code from zephyr is not running on nrf52840dk

willemx — Fri, 25 Nov 2022 06:09:25 GMT

devzone.nordicsemi.com/.../rotary_5F00_1.zip

RE: QDEC sample code from zephyr is not running on nrf52840dk

Kazi Afroza Sultana — Thu, 24 Nov 2022 12:30:47 GMT

hello,

Can you send me your whole project so I can try to reproduce from here?

RE: QDEC sample code from zephyr is not running on nrf52840dk

willemx — Sun, 20 Nov 2022 10:54:36 GMT

On my system there is no qdec sample inside the samples folder, so I copied the qdec sample from github: https://github.com/zephyrproject-rtos/zephyr/tree/main/samples/sensor/qdec

I added your 2043.app.overlay to the folder, but it was not recognized as an overlay file by the build system. I had to use the nRFConnect extension to first explicitly create an overlay and then I copied the contents of the 2043.app.overlay into this new overlay file rf52840dk_nrf52840.overlay.

Building then results in this error: __device_dts_ord_DT_N_ALIAS_qdec0_ORD' undeclared (first use in this function)
96 | #define DEVICE_NAME_GET(name) _CONCAT(__device_, name)

RE: QDEC sample code from zephyr is not running on nrf52840dk

Kazi Afroza Sultana — Fri, 18 Nov 2022 12:37:31 GMT

Can you try to place this app.overlay file inside the sample folder (for example C:\NCS\v2.0.2\zephyr\samples\sensor\qdec) and run the sample?

devzone.nordicsemi.com/.../2043.app.overlay

RE: QDEC sample code from zephyr is not running on nrf52840dk

willemx — Thu, 17 Nov 2022 13:01:36 GMT

That helped! The previous error is now gone.

However, there is now a new error:

undefined reference to `__device_dts_ord_101'

I have just this minimal main.c:

#include <device.h>
#include <drivers/sensor.h>

void main(void) {
const struct device *const dev = DEVICE_DT_GET(DT_ALIAS(qdec));

    if (!device_is_ready(dev)) {
        printk("Qdec device is not ready\n");
        return;
    }
}

RE: QDEC sample code from zephyr is not running on nrf52840dk

Kazi Afroza Sultana — Thu, 17 Nov 2022 12:25:02 GMT

You have not any node called qdec0. Try to change this to ''qdec''.

RE: QDEC sample code from zephyr is not running on nrf52840dk

AdityaN — Thu, 17 Nov 2022 11:50:21 GMT

[quote userid="119945" url="~/f/nordic-q-a/93810/qdec-sample-code-from-zephyr-is-not-running-on-nrf52840dk/396151"]This does not mention qdec0, but qdec.[/quote]

Oh....Then just changing the value in aliases node from qdec0 to qdec should solve the problem

RE: QDEC sample code from zephyr is not running on nrf52840dk

willemx — Thu, 17 Nov 2022 09:25:56 GMT

So I should modify the original nrf52840dk_nrf52840.dts file? I thought I should be using an overlay file to make configuration changes. Therefore I put everything in the file nrf52840dk_nrf52840.overlay which now has this content:

&{/} {
    aliases {
        qdec0=&qdec;
    };
};

&qdec {
    compatible = "nordic,nrf52840-dk-nrf52840";
    pinctrl-0 = <&qdec_default>;
    pinctrl-1 = <&qdec_sleep>;
    pinctrl-names = "default", "sleep";
    label = "qdec";
};

&pinctrl {
    qdec_default: qdec_default {
        group1 {
        psels = <NRF_PSEL(QDEC_A, 0, 3)>,
              <NRF_PSEL(QDEC_B, 0, 28)>;
        };
    };

    qdec_sleep: qdec_sleep {
        group1 {
            psels = <NRF_PSEL(QDEC_A, 0, 3)>,
                <NRF_PSEL(QDEC_B, 0, 28)>;
            low-power-enable;
        };
    };
};

&qdec {
    status = "okay";
    enable-pin = <30>;
    led-pre = <0>;
    steps = <24>;
    pinctrl-0 = <&qdec_default>;
    pinctrl-1 = <&qdec_sleep>;
    pinctrl-names = "default", "sleep";
};

And this still produces the same error message '__device_dts_ord_DT_N_ALIAS_qdec_ORD' undeclared

This does not mention qdec0, but qdec.

In main.c the following line is used to get the device:

const struct device *const dev = DEVICE_DT_GET(DT_ALIAS(qdec));

Thank you BTW for your assistance; I am just starting with nrf/Zephyr development and this device tree configuration is quit confusing to me.

RE: QDEC sample code from zephyr is not running on nrf52840dk

Kazi Afroza Sultana — Thu, 17 Nov 2022 08:54:46 GMT

"Later in your device tree file" I meant this file ''nRF52840dk_nrf52840.dts''.

RE: QDEC sample code from zephyr is not running on nrf52840dk

AdityaN — Thu, 17 Nov 2022 03:20:29 GMT

You will probably need to add root node and declare aliases

&{/} {

    aliases {
        qdec0=&qdec;
    };
};

Add this to your overlay file

RE: QDEC sample code from zephyr is not running on nrf52840dk

willemx — Wed, 16 Nov 2022 18:23:52 GMT

Alas, I still get the same error.

I changed the contents of the overlay file to exactly what you advised. However, I don't quit understand what you mean by "Later in your device tree file". I put everything including the last &qdec definition in the same overlay file. Is this not ok?

BTW, the IDE complains about this line: compatible = "nordic,nrf52840-dk-nrf52840";

it says in a popup: Unknown node type "nordic,nrf52840-dk-nrf52840"

I am working with the nrf52840dk PCA 10056 V3.0.0

RE: QDEC sample code from zephyr is not running on nrf52840dk

Kazi Afroza Sultana — Wed, 16 Nov 2022 16:19:16 GMT

Are you working on same DK? You need to create an overlay file the following way.

&qdec {

compatible = "nordic,nrf52840-dk-nrf52840";

pinctrl-0 = <&qdec_default>;

pinctrl-1 = <&qdec_sleep>;

pinctrl-names = "default", "sleep";

label = "qdec";

};

&pinctrl {

qdec_default: qdec_default {

group1 {

psels = <NRF_PSEL(QDEC_A, 0, 3)>,

<NRF_PSEL(QDEC_B, 0, 28)>;

};

qdec_sleep: qdec_sleep {

group1 {

psels = <NRF_PSEL(QDEC_A, 0, 3)>,

<NRF_PSEL(QDEC_B, 0, 28)>;

low-power-enable;

};

Later in your device tree file you will add this-

&qdec {

status = "okay";

enable-pin = <30>;

led-pre = <0>;

steps = <24>;

pinctrl-0 = <&qdec_default>;

pinctrl-1 = <&qdec_sleep>;

pinctrl-names = "default", "sleep";

};

Check if it works.

RE: QDEC sample code from zephyr is not running on nrf52840dk

willemx — Wed, 16 Nov 2022 14:38:15 GMT

Hi, I'm struggling with the same problem.

Based on your discussion above, I have created a device tree overlay file like this:

&pinctrl {
    qdec_default: qdec_default {
        group1 {
            psels = <NRF_PSEL(QDEC_A, 0, 3)>,
                <NRF_PSEL(QDEC_B, 0, 28)>;
        };
    };

    qdec_sleep: qdec_sleep {
        group1 {
            psels = <NRF_PSEL(QDEC_A, 0, 3)>,
                <NRF_PSEL(QDEC_B, 0, 28)>;
            low-power-enable;
        };
    };
};

&qdec {
    status = "okay";
    enable-pin = <30>;
    led-pre = <0>;
    steps = <24>;
    pinctrl-0 = <&qdec_default>;
    pinctrl-1 = <&qdec_sleep>;
    pinctrl-names = "default", "sleep";
};

but when I try to build, I get this error:

../src/main.c: In function 'main':
/home/willem/ncs/v2.1.0/zephyr/include/zephyr/device.h:96:39: error: '__device_dts_ord_DT_N_ALIAS_qdec_ORD' undeclared (first use in this function)
96 | #define DEVICE_NAME_GET(name) _CONCAT(__device_, name)

So I must be missing something...

Can you help me to get this fixed?

RE: QDEC sample code from zephyr is not running on nrf52840dk

Kazi Afroza Sultana — Tue, 15 Nov 2022 11:44:06 GMT

Great to hear that. If you want can share your idea with the community.

RE: QDEC sample code from zephyr is not running on nrf52840dk

AdityaN — Mon, 14 Nov 2022 14:17:22 GMT

Thanks a lot! it's working as expected.

RE: QDEC sample code from zephyr is not running on nrf52840dk

Kazi Afroza Sultana — Mon, 14 Nov 2022 13:21:25 GMT

Hello,

You have to add pinctrl qdec node in the device tree. You need to add this in device tree:

pinctrl-0 = <&qdec_default>;
pinctrl-1 = <&qdec_sleep>;
pinctrl-names = "default", "sleep";

then,

https://github.com/nrfconnect/sdk-nrf/blob/main/boards/arm/nrf52840gmouse_nrf52840/nrf52840gmouse_nrf52840-pinctrl.dtsi#L70

sdk-nrf/nrf52840gmouse_nrf52840.dts at main · nrfconnect/sdk-nrf (github.com)

RE: QDEC sample code from zephyr is not running on nrf52840dk

AdityaN — Sun, 13 Nov 2022 10:50:02 GMT

Hii, thanks for replying........I tried it, but i still got an error,

-- Found BOARD.dts: /home/akashi/zephyrproject/zephyr/boards/arm/nrf52840dk_nrf52840/nrf52840dk_nrf52840.dts
-- Found devicetree overlay: /home/akashi/zephyrproject/zephyr/samples/sensor/qdec/boards/nrf52840dk_nrf52840.overlay
devicetree error: Label 'qdec0' appears on /nrf-qdec@0 and on /soc/qdec@40012000
-- In: /home/akashi/zephyrproject/zephyr/samples/sensor/qdec/build/zephyr, command: /home/akashi/ncs/toolchains/v2.1.1/usr/local/bin/python3.8;/home/akashi/zephyrproject/zephyr/scripts/dts/gen_defines.py;--dts;/home/akashi/zephyrproject/zephyr/samples/sensor/qdec/build/zephyr/zephyr.dts.pre;--dtc-flags;'-Wno-unique_unit_address_if_enabled';--bindings-dirs;/home/akashi/zephyrproject/zephyr/dts/bindings;--header-out;/home/akashi/zephyrproject/zephyr/samples/sensor/qdec/build/zephyr/include/generated/devicetree_generated.h.new;--dts-out;/home/akashi/zephyrproject/zephyr/samples/sensor/qdec/build/zephyr/zephyr.dts.new;--edt-pickle-out;/home/akashi/zephyrproject/zephyr/samples/sensor/qdec/build/zephyr/edt.pickle;--vendor-prefixes;/home/akashi/zephyrproject/zephyr/dts/bindings/vendor-prefixes.txt
CMake Error at /home/akashi/zephyrproject/zephyr/cmake/modules/dts.cmake:231 (message):
  gen_defines.py failed with return code: 1
Call Stack (most recent call first):
  /home/akashi/zephyrproject/zephyr/cmake/modules/zephyr_default.cmake:108 (include)
  /home/akashi/zephyrproject/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:66 (include)
  /home/akashi/zephyrproject/zephyr/share/zephyr-package/cmake/ZephyrConfig.cmake:92 (include_boilerplate)
  CMakeLists.txt:4 (find_package)


-- Configuring incomplete, errors occurred!
FATAL ERROR: command exited with status 1: /home/akashi/ncs/toolchains/v2.1.1/usr/local/bin/cmake -DWEST_PYTHON=/home/akashi/ncs/toolchains/v2.1.1/usr/local/bin/python3.8 -B/home/akashi/zephyrproject/zephyr/samples/sensor/qdec/build -GNinja -DBOARD=nrf52840dk_nrf52840 -DNCS_TOOLCHAIN_VERSION:STRING=NONE -DCONF_FILE:STRING=/home/akashi/zephyrproject/zephyr/samples/sensor/qdec/prj.conf -DDTC_OVERLAY_FILE:STRING=/home/akashi/zephyrproject/zephyr/samples/sensor/qdec/boards/nrf52840dk_nrf52840.overlay -DBOARD_ROOT:STRING=/home/akashi/zephyrproject/zephyr/samples/sensor/qdec -S/home/akashi/zephyrproject/zephyr/samples/sensor/qdec

i did some research online and then tried implementing this

&{/}{
    aliases {
        qdec0=&qdec;
    };
};

&qdec {
    status = "okay";
    a-pin = < 38 >;
    b-pin = < 39 >;
    enable-pin = < 32 >;
    led-pin = < 13 >;
    led-pre = < 0 >;
    steps = < 20 >;
};

Now i'm getting this error

RE: QDEC sample code from zephyr is not running on nrf52840dk

Kazi Afroza Sultana — Fri, 11 Nov 2022 14:31:10 GMT

Hello,

qdec0 is not set in aliases. There is no 'qdec' as subnode in the device tree.

Thanks.

Best Regards,

Kazi Afroza Sultana